This material presents the topic of modern machines. It combines the elements of mechanical theory, drafting skills and practical applications. The topics treated include: graphical analysis of machines in the areas of velocity and acceleration polygons, and the dynamics of cams, gears and intermittent motion mechanisms. The materials are presented in an action-oriented format combining many of the features normally found in a textbook with those usually associated with a laboratory manual.
BASIC GRAPHIC ANALYSIS 1
PLOTTING EQUIPMENT CALIBRATION 6
LINK POINT CURVES 13
INSTANTANEOUS CENTERS 23
SLIDER-CRANK CHARACTERISTICS 32
VELOCITY AND ACCELERATION POLYGONS 40
STRAIGHT-LINE MECHANISMS 51
TOGGLE MECHANISMS 59
MECHANICAL COMPUTING MECHANISMS 66
CAM WITH SINGLE FOLLOWER 74
CAM WITH DOUBLE FOLLOWER 83
COMPLEX MOTION CAMS 91
VELOCITY MULTIPLICATION WITH GEARS 100
INTERMITTENT MOTION MECHANISMS 108
SUMMARY OF TECHNIQUES 116
This manual, along with the others in the Electromechanical Technology Series, is the result of six years of research and development by TERC, a national nonprofit, public service corporation with headquarters in Cambridge, Massachusetts. It has undergone a number of revisions as a direct result of experience gained with students in technical schools and community colleges throughout the country.